swkpku / swkdiff Goto Github PK
View Code? Open in Web Editor NEWimplement a simple version of git diff.
implement a simple version of git diff.
1. run "g++ swk_diff.cc -o swk_diff -std=c++11" 2. run "./swk_diff text1.txt text2.txt" # Algorithm str1: abcbdab str2: bdcaba str2 is a modification of str1. edit graph: a b c b d a b b ↓ ↘ → ↘ → → ↘ d ↓ ↓ ↓ ↓ ↘ → → c ↓ ↓ ↘ → ↓ ↓ ↓ a ↘ ↓ ↓ ↓ ↓ ↘ → b ↓ ↘ ↓ ↘ → ↓ ↘ a ↘ ↓ ↓ ↓ ↓ ↘ ↓ start from the right-bottom corner of the edit graph to track the optimal path: 1. encounter a "↓" means that there is a insert operation. 2. encounter a "→" means that there is a delete operation. 3. encounter a "↘ " means that there is a match between str1 and str2.
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